LAN speed caped at 100Mbps

[DjordjeL]

Device: JW-WR758AC
Firmware Version: OpenWrt 22.03.2 r19803-9a599fee93 / LuCI openwrt-22.03 branch git-22.288.45147-96ec0cd

root@OpenWrt:~# swconfig dev switch0 show
Global attributes:
        enable_vlan: 1
        alternate_vlan_disable: 0
        bc_storm_protect: 0
        led_frequency: 0
Port 0:
        disable: 1
        doubletag: 0
        untag: 0
        led: 5
        lan: 1
        recv_bad: 0
        recv_good: 0
        tr_bad: 0
        tr_good: 0
        pvid: 0
        link: port:0 link:down
Port 1:
        disable: 1
        doubletag: 0
        untag: 0
        led: 5
        lan: 1
        recv_bad: 0
        recv_good: 0
        tr_bad: 0
        tr_good: 0
        pvid: 0
        link: port:1 link:down
Port 2:
        disable: 1
        doubletag: 0
        untag: 0
        led: 5
        lan: 1
        recv_bad: 0
        recv_good: 0
        tr_bad: 0
        tr_good: 0
        pvid: 0
        link: port:2 link:down
Port 3:
        disable: 1
        doubletag: 0
        untag: 0
        led: 5
        lan: 1
        recv_bad: 0
        recv_good: 0
        tr_bad: 0
        tr_good: 0
        pvid: 0
        link: port:3 link:down
Port 4:
        disable: 0
        doubletag: 0
        untag: 1
        led: 5
        lan: 1
        recv_bad: 0
        recv_good: 3685
        tr_bad: 0
        tr_good: 1263
        pvid: 1
        link: port:4 link:up speed:100baseT full-duplex
Port 5:
        disable: 1
        doubletag: 0
        untag: 0
        led: ???
        lan: 1
        recv_bad: 0
        recv_good: 0
        tr_bad: 0
        tr_good: 0
        pvid: 0
        link: port:5 link:down
Port 6:
        disable: 0
        doubletag: 0
        untag: 0
        led: ???
        lan: ???
        recv_bad: ???
        recv_good: ???
        tr_bad: ???
        tr_good: ???
        pvid: 0
        link: port:6 link:up speed:1000baseT full-duplex
VLAN 1:
        ports: 4 6t

Device has only 1 LAN port is it possible to set it to full gigabit speed or is it a hardware limitation?
(using CAT5e cable)

[maurer]

Install ethtool and query the port (eth0 or eth1)

[DjordjeL]

root@OpenWrt:~# ls -l /sys/class/net
lrwxrwxrwx    1 root     root             0 Nov 12 14:07 br-lan -> ../../devices/virtual/net/br-lan
lrwxrwxrwx    1 root     root             0 Jan  1  1970 eth0 -> ../../devices/platform/10100000.ethernet/net/eth0
lrwxrwxrwx    1 root     root             0 Nov 12 14:07 eth0.1 -> ../../devices/virtual/net/eth0.1
lrwxrwxrwx    1 root     root             0 Jan  1  1970 lo -> ../../devices/virtual/net/lo
lrwxrwxrwx    1 root     root             0 Oct 14 22:59 wlan0 -> ../../devices/platform/10300000.wmac/net/wlan0
lrwxrwxrwx    1 root     root             0 Oct 14 22:59 wlan1 -> ../../devices/pci0000:00/0000:00:00.0/0000:01:00.0/net/wlan1
root@OpenWrt:~# ethtool eth0
Settings for eth0:
Cannot get device settings: No such device
        Current message level: 0x000000ff (255)
                               drv probe link timer ifdown ifup rx_err tx_err
        Link detected: yes

[bmork]

@DjordjeL

Device: JW-WR758AC

This device? https://openwrt.org/toh/hwdata/comfast/comfast_cf-wr758ac_v1

That's a MT7628AN SoC. Not too powerful and 100M ethernet only.

[DjordjeL]

Yes that is it, but swconfig returns:
link: port:6 link:up speed:1000baseT full-duplex
link: port:4 link:up speed:100baseT full-duplex

And in LuCI it shows 1000baseT full-duplex

[maurer]

That should be cpu virtual port

[lleachii]

@DjordjeL

And in LuCI it shows 1000baseT full-duplex

I see one-hundred (100), not one-thousand. That's your PHY LAN port. It's 100 Mbps Fast Ethernet.